QEMU 5.0.0 hw/usb/hcd-xhci.c usb_packet_map Return Value use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in QEMU 5.0.0. Affected by this issue is the function usb_packet_map of the file hw/usb/hcd-xhci.c. Executing a manipulation as part of Return Value can lead to use after free. This vulnerability is tracked as CVE-2020-25084. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability has been found in QEMU 5.0.0 (Virtualization Software) and classified as critical. This vulnerability affects the function usb_packet_map of the file hw/usb/hcd-xhci.c. The manipulation as part of a Return Value leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

QEMU 5.0.0 has a use-after-free in hw/usb/hcd-xhci.c because the usb_packet_map return value is not checked.

The weakness was disclosed 09/25/2020 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2020-25084 since 09/02/2020. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/26/2024).

The vulnerability scanner Nessus provides a plugin with the ID 209571 (Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (209571). The entries VDB-161936 and VDB-161933 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.2
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209571
Nessus Name: Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/02/2020 🔍
09/25/2020 +23 days 🔍
09/25/2020 +0 days 🔍
10/26/2024 +1492 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-25084 (🔍)
GCVE (CVE): GCVE-0-2020-25084
GCVE (VulDB): GCVE-100-161932
See also: 🔍

Entryinfo

Created: 09/25/2020 15:28
Updated: 10/26/2024 17:11
Changes: 09/25/2020 15:28 (39), 09/25/2020 15:33 (18), 11/13/2020 07:52 (1), 11/14/2020 06:49 (1), 10/26/2024 17:11 (17)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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